CA2507254A1 - Apparatus for providing positive airway pressure to a patient - Google Patents
Apparatus for providing positive airway pressure to a patient Download PDFInfo
- Publication number
- CA2507254A1 CA2507254A1 CA002507254A CA2507254A CA2507254A1 CA 2507254 A1 CA2507254 A1 CA 2507254A1 CA 002507254 A CA002507254 A CA 002507254A CA 2507254 A CA2507254 A CA 2507254A CA 2507254 A1 CA2507254 A1 CA 2507254A1
- Authority
- CA
- Canada
- Prior art keywords
- patient
- pressure
- flow
- processing means
- delivered
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000003434 inspiratory effect Effects 0.000 claims abstract 2
- 230000029058 respiratory gaseous exchange Effects 0.000 claims 9
- 239000012530 fluid Substances 0.000 claims 2
- 238000009499 grossing Methods 0.000 claims 2
- 230000010355 oscillation Effects 0.000 claims 2
- 238000001914 filtration Methods 0.000 claims 1
- 230000007704 transition Effects 0.000 claims 1
- 238000011282 treatment Methods 0.000 abstract 3
- 206010007559 Cardiac failure congestive Diseases 0.000 abstract 1
- 206010019280 Heart failures Diseases 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract 1
- 208000035475 disorder Diseases 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 208000001797 obstructive sleep apnea Diseases 0.000 abstract 1
- 230000000241 respiratory effect Effects 0.000 abstract 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0051—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes with alarm devices
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0057—Pumps therefor
- A61M16/0066—Blowers or centrifugal pumps
- A61M16/0069—Blowers or centrifugal pumps the speed thereof being controlled by respiratory parameters, e.g. by inhalation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/021—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes operated by electrical means
- A61M16/022—Control means therefor
- A61M16/024—Control means therefor including calculation means, e.g. using a processor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/20—Valves specially adapted to medical respiratory devices
- A61M16/201—Controlled valves
- A61M16/202—Controlled valves electrically actuated
- A61M16/203—Proportional
- A61M16/204—Proportional used for inhalation control
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/20—Valves specially adapted to medical respiratory devices
- A61M16/201—Controlled valves
- A61M16/202—Controlled valves electrically actuated
- A61M16/203—Proportional
- A61M16/205—Proportional used for exhalation control
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0057—Pumps therefor
- A61M16/0066—Blowers or centrifugal pumps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
- A61M2016/0015—Accessories therefor, e.g. sensors, vibrators, negative pressure inhalation detectors
- A61M2016/0018—Accessories therefor, e.g. sensors, vibrators, negative pressure inhalation detectors electrical
- A61M2016/0021—Accessories therefor, e.g. sensors, vibrators, negative pressure inhalation detectors electrical with a proportional output signal, e.g. from a thermistor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
- A61M2016/0027—Accessories therefor, e.g. sensors, vibrators, negative pressure pressure meter
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
- A61M2016/003—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter
- A61M2016/0033—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical
- A61M2016/0036—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical in the breathing tube and used in both inspiratory and expiratory phase
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
- A61M2016/003—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter
- A61M2016/0033—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical
- A61M2016/0039—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical in the inspiratory circuit
Abstract
A system including methods and apparatus for treatment of a medical disorder such as obstructive sleep apnea or congestive heart failure. The system involves applying a gain to flow rate of pressurized gas delivered to a patient during inspiratory and/or expiratory phases of a respiratory cycle to deliver the pressurized gas in proportion to the respective gains during inspiration and/or expiration. A base pressure may be applied in addition to the gain-modified pressures and an elevated pressure profile may be employed to assist or control inspiration. The system may be utilized in connection with conventional continuous positive airway pressure treatments, such as CPAP
or bi-level positive airway pressure equipment to effect various beneficial treatment applications.
or bi-level positive airway pressure equipment to effect various beneficial treatment applications.
Claims (10)
1. An apparatus for delivering pressurized breathing gas to an airway of a patient, that includes: a gas flow generator, a patient interface coupled to the gas flow generator to communicate a flow of breathing gas from the gas flow generator with an airway of a patient, a sensor associated with the gas flow generator or the patient interface that detects a fluid characteristic associated with the flow of breathing gas within the patient interface and outputs a signal corresponding to the fluid characteristic, a pressure controller associated with the gas flow generator or the patient interface to control a pressure of the flow of breathing gas delivered to a patient, an input device, and a processing means, adapted to receive the signal output from the sensor, and a continuous positive airway pressure (CPAP) and an expiratory gain Gain Exp from the input device, characterized in that:
the processing means determinines a pressure to be delivered to a patient during inhalation (Pinhalation) as:
Pinhalation = CPAP, and determining a pressure to be delivered to such a patient during exhalation (Pexhalation) as:
Pexhalation = CPAP + Gain Exp * (Flow - FlowOffset), where "Flow" is the current patient flow measured by the sensor, where "FlowOffset"
corresponds to a final value of patient flow during inspiration responsive to the final value being positive, otherwise FlowOffest is set to zero, and wherein the processing means controls the pressure controller so as to deliver a pressure corresponding to Pinhalation during an inspiratory phase of a breathing cycle and corresponding to Pexhalation during an expiatory phase of a breathing cycle.
the processing means determinines a pressure to be delivered to a patient during inhalation (Pinhalation) as:
Pinhalation = CPAP, and determining a pressure to be delivered to such a patient during exhalation (Pexhalation) as:
Pexhalation = CPAP + Gain Exp * (Flow - FlowOffset), where "Flow" is the current patient flow measured by the sensor, where "FlowOffset"
corresponds to a final value of patient flow during inspiration responsive to the final value being positive, otherwise FlowOffest is set to zero, and wherein the processing means controls the pressure controller so as to deliver a pressure corresponding to Pinhalation during an inspiratory phase of a breathing cycle and corresponding to Pexhalation during an expiatory phase of a breathing cycle.
2. The apparatus of claim 1, wherein the patient interface includes a conduit, and wherein the pressure controller is a valve associated with the conduit that exhausts gas from the conduit to control the pressure of the flow of breathing gas delivered to such a patient.
3. The apparatus of claim 1, wherein the CPAP level is set via the input device.
4. The apparatus of claim 1, wherein the CPAP level is determined by the processing means based on an output of the sensor.
5. The apparatus of claim 1, wherein the processing means controls the pressure controller so as to prevent pressure oscillations during expiration.
6. The apparatus of claim 5, wherein the processing means controls the pressure controller to prevent oscillations by causing the pressure controller to provide a pressure to a patient during expiration after a maximum pressure reduction has been met at a greater of (1) Pexhalation and (2) a current pressure being provided to such a patient.
7. The apparatus of claim 1, wherein the processing means also limits a rate of change for the pressure of the flow of breathing gas to be delivered to such a patient.
8. The apparatus of claim 7, wherein the processing means sets a first rate of change limit for an increase in the pressure to be delivered to a patient and sets second rate of change limit for a decrease in the pressure to be delivered to a patient.
9. The apparatus of claim 1, further comprising means for smoothing transitions between changes in a pressure of the flow of breathing gas to be delivered to a patient.
10. The apparatus of claim 9, wherein the means for smoothing comprises a filter for filtering a signal provided by the processing means to the pressure controller, wherein the signal corresponds to Pexhalation or Pinhalation determined by the processing means.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/304,590 US6932084B2 (en) | 1994-06-03 | 2002-11-26 | Method and apparatus for providing positive airway pressure to a patient |
US10/304,590 | 2002-11-26 | ||
PCT/US2003/037697 WO2004047621A2 (en) | 2002-11-26 | 2003-11-25 | Apparatus for providing positive airway pressure to a patient |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2507254A1 true CA2507254A1 (en) | 2004-06-10 |
CA2507254C CA2507254C (en) | 2011-08-09 |
Family
ID=32392433
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2507254A Expired - Lifetime CA2507254C (en) | 2002-11-26 | 2003-11-25 | Apparatus for providing positive airway pressure to a patient |
Country Status (7)
Country | Link |
---|---|
US (6) | US6932084B2 (en) |
EP (1) | EP1565224B1 (en) |
JP (1) | JP4426462B2 (en) |
AU (1) | AU2003295925B2 (en) |
BR (1) | BR0316705B1 (en) |
CA (1) | CA2507254C (en) |
WO (1) | WO2004047621A2 (en) |
Families Citing this family (248)
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-
2002
- 2002-11-26 US US10/304,590 patent/US6932084B2/en not_active Expired - Lifetime
-
2003
- 2003-11-25 WO PCT/US2003/037697 patent/WO2004047621A2/en active IP Right Grant
- 2003-11-25 EP EP03787139A patent/EP1565224B1/en not_active Expired - Lifetime
- 2003-11-25 CA CA2507254A patent/CA2507254C/en not_active Expired - Lifetime
- 2003-11-25 AU AU2003295925A patent/AU2003295925B2/en not_active Ceased
- 2003-11-25 BR BRPI0316705-4A patent/BR0316705B1/en active IP Right Grant
- 2003-11-25 JP JP2004555733A patent/JP4426462B2/en not_active Expired - Fee Related
-
2005
- 2005-07-15 US US11/182,387 patent/US7296573B2/en not_active Expired - Lifetime
-
2007
- 2007-10-29 US US11/926,885 patent/US20080053443A1/en not_active Abandoned
- 2007-10-29 US US11/926,867 patent/US7810496B2/en not_active Expired - Fee Related
- 2007-10-30 US US11/929,127 patent/US20080053444A1/en not_active Abandoned
-
2010
- 2010-10-15 US US12/905,230 patent/US20110036352A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
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EP1565224A4 (en) | 2008-01-23 |
US7296573B2 (en) | 2007-11-20 |
AU2003295925B2 (en) | 2007-04-19 |
EP1565224B1 (en) | 2012-05-23 |
US6932084B2 (en) | 2005-08-23 |
US20080053444A1 (en) | 2008-03-06 |
AU2003295925A1 (en) | 2004-06-18 |
WO2004047621A2 (en) | 2004-06-10 |
JP4426462B2 (en) | 2010-03-03 |
BR0316705A (en) | 2005-10-18 |
US20030121519A1 (en) | 2003-07-03 |
US7810496B2 (en) | 2010-10-12 |
JP2006507873A (en) | 2006-03-09 |
US20080053443A1 (en) | 2008-03-06 |
EP1565224A2 (en) | 2005-08-24 |
WO2004047621A3 (en) | 2004-10-07 |
CA2507254C (en) | 2011-08-09 |
US20110036352A1 (en) | 2011-02-17 |
BR0316705B1 (en) | 2012-12-25 |
US20050247315A1 (en) | 2005-11-10 |
US20080053442A1 (en) | 2008-03-06 |
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